SnO2 thin film gas sensors for fire-alarm systems

被引：20

作者：

Korotchenkov, G ^{[1
]}

Brynzari, V ^{[1
]}

Dmitriev, S ^{[1
]}

机构：

[1] Tech Univ Moldova, Dept Microelect, Chisinau 2004, Moldova

来源：

SENSORS AND ACTUATORS B-CHEMICAL | 1999年 / 54卷 / 03期

关键词：

fire-alarm system; smoke generator; gas sensor; SnO2 thin films;

D O I：

10.1016/S0925-4005(99)00019-2

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

This paper presents results of studying of SnO2 thin films gas sensors (TFGS) sensitivity to the combustion products. The influence of operating temperature and the kind of a combustible material on TFGS sensitivity to the products of combustion and smouldering was considered. The kinetic characteristics of gas sensors as smoke sensors were determined. The specifics of a combustion products influence on gas sensitive characteristics of gas sensors are noted. In comparison on with CO sensors, the smoke sensors have a more wide temperature range of sensitivity gamma with some maximums, a greater hysteresis of gamma(T) and a longer time of restoration of initial condition. It was established that gas sensors as smoke sensors have high sensitivity (gamma > 10) and may be used as sensitive elements in fire-alarm systems. The temperature regimes of their exploitation are discussed also. (C) 1999 Elsevier Science S.A. All rights reserved.

引用

页码：191 / 196

页数：6

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